Originally Posted by
bbattle
In the 80's narrow bars were really popular; part of the aero kick they had going back then. I've got handlebars taken off 80's frames that are 36 c-c; way too small for me.
My jacket size is 42R; 42 c-c bars are what I have on my road bikes. I may well try some 44cm bars on my next build.
Yet another anecdotal correlation with rpenmanparker's "rule".